NASA has launched a safety probe into SpaceX and Boeing, which are under $6.8 billion contracts to fly its astronauts to space, because Elon Musk sipped whiskey on the rocks and smoked pot — legally — on a podcast, according to a new report.

Officials at the space agency will hold hundreds of “pretty invasive” interviews to examine workplace culture at both companies and “everything and anything that could impact safety,” William Gerstenmaier, NASA’s associate administrator for human exploration, told The Washington Post.

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SpaceX, founded by Musk, signed a $2.6 billion contract with NASA in 2014 to shuttle its astronauts as part of the Commercial Crew Program. Boeing’s contract was for $4.2 billion.

NASA officials issued the safety review over concerns about Musk’s laid-back behavior in a video of the “Joe Rogan Experience” podcast, sources told the outlet.

During the two-and-a-half-hour segment, which was posted on YouTube in September, the 47-year-old Tesla CEO sips whiskey and takes a puff from a blunt during his interview at the show’s California studio. Recreational pot is legal in the Golden State.

NASA Administrator Jim Bridenstein said the review is to ensure that the public is confident in the program, which is set to launch flights next year.

“If I see something that’s inappropriate, the key concern to me is what is the culture that led to that inappropriateness and is NASA involved in that?” Bridenstein said. “As an agency we’re not just leading ourselves, but our contractors, as well. We need to show the American public that when we put an astronaut on a rocket, they’ll be safe.”

Bridenstein added, “Culture and leadership start at the top. Anything that would result in some questioning the culture of safety, we need to fix immediately.”

A NASA spokesman declined to say what prompted the review, which will begin next year. But he said it’s designed to “ensure the companies are meeting NASA’s requirements for workplace safety, including the adherence to a drug-free environment.”

SpaceX said in a statement that it’s dedicated to safe human spaceflight.

“There is nothing more important to SpaceX than this endeavor, and we take seriously the responsibility that NASA has entrusted in us to safely and reliably carry American astronauts to and from the International Space Station,” the company said.